Sai P Katikaneni

7381487, Jun 3, 2008

Dec 27, 2004

11/022914

Sai P. Katikaneni - Danbury CT, US
Mohammad Farooque - Danbury CT, US
Glenn L. Carlson - Bethlehem CT, US
Mark Benedict - Newtown CT, US

FuelCell Energy, Inc. - Danbury CT

H01M 8/00
H01M 8/04

429 12, 429 13, 429 14

A method and apparatus for use with an oxidizer assembly of a fuel cell system in which the oxidizer assembly has an oxidizing unit for oxidizing anode exhaust gas containing electrolyte particulates and is adapted or conditioned so as to enable the electrolyte particulates to be removable from the assembly and to be removed from the assembly, and wherein the conditioning and removing occur with the oxidizing unit retained in the oxidizer assembly. The fuel cell system is also adapted so that such conditioning and removing occur with the oxidizing assembly retained in the fuel cell system.

7381488, Jun 3, 2008

Aug 11, 2004

10/916202

Sai P. Katikaneni - Danbury CT, US
Pinakin Patel - Danbury CT, US

FuelCell Energy, Inc. - Danbury CT

H01M 8/18

429 19, 429 30, 429 34

An oxidizer assembly provided with a housing having a plurality of inlets each for receiving a different gas and a plurality of outlets each corresponding to a different one of the inlets and outputting gas resulting from the gas received from its corresponding inlet. A catalyst assembly able to support gas flow therethrough is disposed within the housing and includes a catalyst able to oxidize carbon monoxide gas and to be regenerated. The catalyst assembly is further adapted to be movable such that successive parts of the assembly are able to be brought repeatedly in communication with a first inlet and its corresponding first outlet and then a second inlet and its corresponding second outlet of the housing. In the preferred form of the invention, the catalyst assembly is additionally adapted so that each section is brought in communication with a third inlet and its corresponding third outlet after being in communication with the second inlet and its corresponding second outlet and prior to being brought back into communication with the first inlet and its corresponding outlet.

7455923, Nov 25, 2008

Sep 1, 2006

11/469527

Sai P. Katikaneni - Brookfield CT, US
Joseph M. Daly - Bethel CT, US
Mohammad Farooque - Danbury CT, US

FuelCell Energy, Inc. - Danbury CT

H01M 8/06

429 17, 429 20

A fuel supply assembly which receives a supply of liquid fuel feedstock including hydrocarbons having higher and lower hydrocarbon content and high molecular weight sulfur-containing compounds, the higher hydrocarbon content and high molecular weight sulfur containing compounds being less volatile that the lower hydrocarbon content. The fuel supply assembly supplies fuel to a fuel cell assembly and has a housing unit adapted to house the liquid fuel feedstock so that the liquid fuel feedstock is subjected to vaporization conditions to allow at least a portion of the liquid fuel feedstock to vaporize to form fuel feedstock vapor, the vaporization conditions being such that the concentration of lower hydrocarbon content is higher and the concentration of higher hydrocarbon content and high molecular weight sulfur containing compounds is lower in the fuel feedstock vapor than in the liquid fuel feedstock. A collecting unit is also provided in the fuel supply assembly and the collecting unit has a first end coupled with the housing unit and a second end adapted to be coupled with the fuel cell assembly which collects the fuel feedstock vapor from the housing unit to make the fuel feedstock vapor available to the fuel cell assembly.

7655196, Feb 2, 2010

Nov 16, 2005

11/280633

Sai P. Katikaneni - Brookfield CT, US
Salvador E. Correa - Simsbury CT, US
Edward H. Gladke - Southington CT, US

FuelCell Energy, Inc. - Danbury CT

B01J 35/02
H01M 8/06
B32B 37/14

422211, 156219, 156349, 156500, 264259, 429 20

A reforming catalyst member having an elongated body whose outer surface has a number of peak and valley regions so as to increase the area of the outer surface to enhance catalyst utilization. The catalyst member is adhered to a fuel cell current collector using an adhesive and dried using infrared radiation.

7678483, Mar 16, 2010

Aug 2, 2005

11/195146

Scott Blanchet - Chelmsford MA, US
Sai Katikaneni - Brookfield CT, US

FuelCell Energy, Inc. - Danbury CT

H01M 8/04
H01M 2/14

429 26, 429 38, 422190

An oxidizer catalyst assembly for use in a fuel cell system for oxidizing anode exhaust gas and in which a first catalyst member is situated along a gas flow path and a second catalyst member is situated along the gas flow path following the first catalyst member. Each of the catalyst members includes a plurality of channels for passing the gas therethrough and an oxidizing catalyst deposited in the channels. The channel density of the channels of the second catalyst member is greater than the channel density of the channels of the first catalyst member and the channel width of the channels of the second catalyst member is less than the channel width of the channels of the first catalyst member.

7871450, Jan 18, 2011

Jun 4, 2009

12/478283

Sai P. Katikaneni - Brookfield CT, US
Joseph M. Daly - Bethel CT, US

FuelCell Energy, Inc. - Danbury CT

C10G 35/04

48197R, 208134

A pre-processing assembly and method for processing fuel feedstock containing oxygen and hydrocarbons having higher and lower hydrocarbon content for a fuel cell, wherein the pre-processing assembly has a deoxidizing bed for reducing oxygen in the fuel feedstock and a pre-reforming bed for reducing higher hydrocarbon content in the fuel feedstock and wherein the deoxidizing bed and the pre-reforming bed are disposed within a common reaction vessel such that the fuel feedstock first passes through the deoxidizing bed and thereafter through the pre-reforming bed. The pre-reforming assembly may further include a propane processor bed for processing propane and propylene in the fuel feedstock, where the propane processor bed is disposed within the common reaction vessel with the deoxidizing bed and the pre-reforming bed.

7879500, Feb 1, 2011

Jun 2, 2008

12/131483

Sai P. Katikaneni - Danbury CT, US
Pinakin Patel - Danbury CT, US

FuelCell Energy, Inc. - Danbury CT

H01M 8/06
B01J 8/04

429410, 429417, 429408, 422188, 422187

An oxidizer assembly provided with a housing having a plurality of inlets each for receiving a different gas and a plurality of outlets each corresponding to a different one of the inlets and outputting gas resulting from the gas received from its corresponding inlet. A catalyst assembly able to support gas flow therethrough is disposed within the housing and includes a catalyst able to oxidize carbon monoxide gas and to be regenerated. The catalyst assembly is further adapted to be movable such that successive parts of the assembly are able to be brought repeatedly in communication with a first inlet and its corresponding first outlet and then a second inlet and its corresponding second outlet of the housing. In the preferred form of the invention, the catalyst assembly is additionally adapted so that each section is brought in communication with a third inlet and its corresponding third outlet after being in communication with the second inlet and its corresponding second outlet and prior to being brought back into communication with the first inlet and its corresponding outlet.

20050022449, Feb 3, 2005

Jul 28, 2003

10/628653

Sai Katikaneni - Brookfield CT, US
Sanjay Parab - West Hartford CT, US

C10K001/00
C01B003/24

048198300, 048128000, 04819700R

A fuel processing system and method for processing fuel for a fuel cell having a first adsorbent bed for adsorption of high molecular weight organic sulfur-containing compounds and inorganic sulfur-containing compounds, and a second adsorbent bed for adsorption of low molecular weight organic sulfur-containing compounds, where the adsorbent beds are arranged such that the fuel to be processed passes through one of the adsorbent beds and, thereafter through the other adsorbent bed.